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DE29615935U1 - Hull for watercraft with gas outlet openings on a part of the underwater hull shell through which a pressurized gas exits - Google Patents

Hull for watercraft with gas outlet openings on a part of the underwater hull shell through which a pressurized gas exits

Info

Publication number
DE29615935U1
DE29615935U1 DE29615935U DE29615935U DE29615935U1 DE 29615935 U1 DE29615935 U1 DE 29615935U1 DE 29615935 U DE29615935 U DE 29615935U DE 29615935 U DE29615935 U DE 29615935U DE 29615935 U1 DE29615935 U1 DE 29615935U1
Authority
DE
Germany
Prior art keywords
hull
watercraft
underwater
hull shell
shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE29615935U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE29615935U priority Critical patent/DE29615935U1/en
Publication of DE29615935U1 publication Critical patent/DE29615935U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
    • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
    • B63B1/34—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction
    • B63B1/38—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes
    • B63B2001/387—Other means for varying the inherent hydrodynamic characteristics of hulls by reducing surface friction using air bubbles or air layers gas filled volumes using means for producing a film of air or air bubbles over at least a significant portion of the hull surface
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T70/00—Maritime or waterways transport
    • Y02T70/10—Measures concerning design or construction of watercraft hulls

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)
  • Catching Or Destruction (AREA)

Description

BeschreibungDescription

Rumpf für Wasserfahrzeuge mit Öffnungen an einem Teil der Unterwasser-Rumpfschale, durch die ein mit Druck beaufschlagtes Gas austritt und in Form von Gasblasen direkt an der Rumpfschale entlang an die Wasseroberfläche aufsteigt.Hull for watercraft with openings in a part of the underwater hull shell through which a pressurized gas escapes and rises in the form of gas bubbles directly along the hull shell to the water surface.

Stand der TechnikState of the art

Raumpfbauformen von Wasserfahrzeugen orientieren sich an den Gesetzen der hydraulischen Strömungslehre. Der Energieaufwand zur Überwindung des Gesamtwiderstandes aus Reibungswiderstand und Formwiderstand, der sich der Fortbewegung entgegegen setzt, wird sowohl durch die strömungstechnische Optimierung der Unterwasserrumpflinien ais auch durch eine besondere, nasenförmige Gestaltung des Unterwasserbuges verringert.The spacecraft designs of watercraft are based on the laws of hydraulic fluid dynamics. The energy required to overcome the total resistance consisting of frictional resistance and form resistance, which opposes propulsion, is reduced both by the fluidic optimization of the underwater hull lines and by a special, nose-shaped design of the underwater bow.

Problemproblem

Der im Anspruch 1 angegebenen Erfindung liegt das Problem zugrunde, daß während der Fortbewegung eines Wasserfahrzeuges nur eine Wasserphase an der Unterwasser-Rumpfschale anliegt, aus der sich der Reibungswiderstand und der Formwiderstand herleiten.The invention specified in claim 1 is based on the problem that during the movement of a watercraft only one phase of water is present on the underwater hull shell, from which the frictional resistance and the form resistance are derived.

Erfindung
Dieses Problem wird mit der Maßgabe des Anspruches 1 gelöst.invention
This problem is solved by the provisions of claim 1.

Vorteilhafte Wirkung der ErfindungAdvantageous effect of the invention

Mit der Erfindung wird für die Dauer der Fortbewegung eines Wasserfahrzeuges ein Zwei-Phasen-Gemisch aus Wasser mit eingelagerten Gasblasen (z.B. Luft) erzeugt, durch das sich die Rumpfschale relativ bewegt.The invention creates a two-phase mixture of water with embedded gas bubbles (e.g. air) for the duration of the movement of a watercraft, through which the hull shell moves relatively.

Sowohl der Reibungswiderstand als auch der Formwiderstand hängen neben spezifischen Beiwerten auch von der Dichte des umströmenden Mediums ab. Durch den direkten Kontakt der Gasblasen mit der Rumpfschale ergeben sich somit ein geringerer Reibungs- und Formwiderstand.Both the frictional resistance and the form resistance depend not only on specific coefficients but also on the density of the surrounding medium. The direct contact of the gas bubbles with the hull shell results in lower frictional and form resistance.

Infolge des geringeren Gesamtwiderstandes vermindert sich die notwendige Antriebsleistung eines Wasserfahrzeuges, bei gleicher Fortbewegungsgeschwindigkeit.As a result of the lower overall resistance, the necessary propulsion power of a watercraft is reduced, while maintaining the same speed of travel.

Weiterbildung der ErfindungFurther development of the invention

Die vorteilhaften Ausgestaltungen der Erfindung sind im Anspruch 2 bis 4 angegeben. The advantageous embodiments of the invention are specified in claims 2 to 4.

Durch die Weiterbildung nach Anspruch 2 wird erreicht, daß eine möglichst große Fläche der Unterwasser-Rumpfschale - einschließlich und im besonderen der Bugpartie - von dem Zwei-Phasen-Gemisch aus Wasser und Luft umströmt wird. Die Umströmung erfolgt sowohl durch die Relativbewegung des Rumpfes in seiner Umgebung als auch durch den Auftrieb der Gasblasen.The further development according to claim 2 ensures that the two-phase mixture of water and air flows around as large an area of the underwater hull shell as possible - including and in particular the bow section. The flow occurs both through the relative movement of the hull in its surroundings and through the buoyancy of the gas bubbles.

Die Bahnkurven der Gasblasen, die in ihrer Gesamtheit die "Hüllfäche" des umströmenden Zwei-Phasen-Gemisches aus Wasser und Luft darstellt, ergeben sich aus den resultierenden Geschwindigkeitsvektoren der Fortbewegungsgeschwindigkeit des Wasserfahrzeuges und der Auftriebsgeschwindigkeit der Gasblasen.The trajectories of the gas bubbles, which in their entirety represent the "envelope" of the flowing two-phase mixture of water and air, result from the resulting velocity vectors of the speed of movement of the watercraft and the buoyancy velocity of the gas bubbles.

Der Anspruch 3 trägt der Betriebssicherheit des Wasserfahrzeuges Rechnung. Durch die Schaffung eines vom übrigen Hohlkörper des Rumpfes unabhängigen Hohlraumsystemes für die Gasführung ist die Betriebssicherheit nach einem unvorhergesehenen Wassereinbruch in dieses System nicht gefährdet.Claim 3 takes into account the operational safety of the watercraft. By creating a cavity system for the gas flow that is independent of the rest of the hollow body of the hull, operational safety is not endangered after an unforeseen water ingress into this system.

Mit Anspruch 4 wird im Ruhezustand ein Wassereintritt in das gasführende System bzw. in das Hauptverteilersystem verhindert. Dadurch wird sowohl der Verschmutzung vorgebeugt als auch die Ausblasearbeit des sonst eindringenden Wasservolumens vermieden.Claim 4 prevents water from entering the gas-carrying system or the main distribution system when the system is at rest. This both prevents contamination and avoids the work of blowing out the volume of water that would otherwise enter.

Darstellung der Erfindung
Ein Ausführungsbeispiel wird in den Bildern 1 bis 3 dargestellt. Es zeigen:Description of the invention
An example of implementation is shown in Figures 1 to 3. They show:

BiIdI: Stilisierte Darstellung des Rumpfes eines Wasserfahrzeuges, umgeben von einer (Nur-) Wasserphase.Image: Stylized representation of the hull of a watercraft, surrounded by a (water-only) phase.

Bild 2: Stilisierte Darstellung des Rumpfes eines Wasserfahrzeuges, umgeben von einem Zwei-Phasen-Gemisch aus Wasser mit eingelagerten Gasblasen (z.B. Luft).Figure 2: Stylized representation of the hull of a watercraft, surrounded by a two-phase mixture of water with embedded gas bubbles (e.g. air).

Bild 3: Einzelheit "X" aus Bild 2:Picture 3: Detail "X" from picture 2:

Stilisierte und vergrößerte Darstellung eines Teiles der Rumpfpartie eines Wasserfahrzeuges, umgeben von einem Zwei-Phasen-Gemisch aus Wasser mit eingelagerten Gasbiasen (z.B. Luft) Ziffer 2, das direkt an der Außenhaut des Unterwasserrumpfes Ziffer 1 anliegt.Stylized and enlarged representation of a part of the hull of a watercraft, surrounded by a two-phase mixture of water with embedded gas bubbles (e.g. air) (number 2), which lies directly against the outer skin of the underwater hull (number 1).

Claims (4)

SchutzansprücheProtection claims 1. Rumpf für Wasserfahrzeuge, dadurch gekennzeichnet,1. Hull for watercraft, characterized in that daß ein Teil der Unterwasser-Rumpfschale mit Öffnungen versehen ist, durch die ein mit Druck beaufschlagtes Gas austritt und in Form von Gasbiasen direkt an der Rumpfschale entlang an die Wasseroberfläche aufsteigt.that part of the underwater hull shell is provided with openings through which a pressurised gas escapes and rises in the form of gas bubbles directly along the hull shell to the water surface. 2. Öffnungen in der Unterwasser-Rumpfschale nach Anspruch 1, dadurch gekennzeichnet,2. Openings in the underwater hull shell according to claim 1, characterized in daß sie im Bereich der Kiellinie über die gesamte Länge der Unterwasser-Rumpfschale - insbsondere in der Bug- und Vorderrumpfpartie in einer engeren Anordnung - sowie quer zur Kiellinie angeordnet sind.that they are arranged in the area of the keel line over the entire length of the underwater hull shell - in particular in the bow and forward hull sections in a closer arrangement - as well as transversely to the keel line. 3. Öffnungen in der Unterwasser-Rumpfschale nach Anspruch 2, dadurch gekennzeichnet,3. Openings in the underwater hull shell according to claim 2, characterized in that daß sie Teil eines vom übrigen Hohlkörper des Rumpfes des Wasserfahrzeuges unabhängigen Hohlraumsystemes sind.that they are part of a cavity system that is independent of the rest of the hollow body of the hull of the watercraft. 4. Öffnungen in der Unterwasser-Rumpfschale nach Anspruch 3, dadurch gekennzeichnet, daß sie mit einem Verschlußsystem ausgerüstet sind.4. Openings in the underwater hull shell according to claim 3, characterized in that they are equipped with a closure system.
DE29615935U 1996-09-13 1996-09-13 Hull for watercraft with gas outlet openings on a part of the underwater hull shell through which a pressurized gas exits Expired - Lifetime DE29615935U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29615935U DE29615935U1 (en) 1996-09-13 1996-09-13 Hull for watercraft with gas outlet openings on a part of the underwater hull shell through which a pressurized gas exits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE29615935U DE29615935U1 (en) 1996-09-13 1996-09-13 Hull for watercraft with gas outlet openings on a part of the underwater hull shell through which a pressurized gas exits

Publications (1)

Publication Number Publication Date
DE29615935U1 true DE29615935U1 (en) 1996-11-14

Family

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Family Applications (1)

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DE29615935U Expired - Lifetime DE29615935U1 (en) 1996-09-13 1996-09-13 Hull for watercraft with gas outlet openings on a part of the underwater hull shell through which a pressurized gas exits

Country Status (1)

Country Link
DE (1) DE29615935U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258495B4 (en) * 2002-12-14 2007-03-01 Buchert, Jürgen Friction reduction drive for watercraft by turbine
DE102006061373A1 (en) * 2006-12-22 2008-07-10 Siemens Ag Ship e.g. container ship, has electrically driven compressor switched on for using balance energy in main power supply for producing compressor air, such that formation of air bubbles in parts of ship body is achieved
DE102007053645A1 (en) * 2007-11-08 2009-05-14 Häußer, Achim Air blowing hull for use in ship, has air blowing like absorbing pads, and openings provided under water line, where air leaks out through openings, and air forms intermediate zone between hull and water
DE102008027294A1 (en) * 2008-06-06 2009-12-10 Häußer, Achim Use of waste heat of e.g. cooling system, and kinetic energy of exhaust gas stream of marine diesel engine of cruise ship, enables production of compressed air by mechanical loader powered by exhaust gases

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10258495B4 (en) * 2002-12-14 2007-03-01 Buchert, Jürgen Friction reduction drive for watercraft by turbine
DE102006061373A1 (en) * 2006-12-22 2008-07-10 Siemens Ag Ship e.g. container ship, has electrically driven compressor switched on for using balance energy in main power supply for producing compressor air, such that formation of air bubbles in parts of ship body is achieved
DE102006061373B4 (en) 2006-12-22 2019-03-07 Siemens Aktiengesellschaft Ship with a system for using surplus energy on board
DE102007053645A1 (en) * 2007-11-08 2009-05-14 Häußer, Achim Air blowing hull for use in ship, has air blowing like absorbing pads, and openings provided under water line, where air leaks out through openings, and air forms intermediate zone between hull and water
DE102008027294A1 (en) * 2008-06-06 2009-12-10 Häußer, Achim Use of waste heat of e.g. cooling system, and kinetic energy of exhaust gas stream of marine diesel engine of cruise ship, enables production of compressed air by mechanical loader powered by exhaust gases

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Legal Events

Date Code Title Description
R086 Non-binding declaration of licensing interest
R207 Utility model specification

Effective date: 19970102

R156 Lapse of ip right after 3 years

Effective date: 20000701